Synthesis of Nanostructured Zinc Oxide Thin Films by Anodic Oxidation Method

Ravanbakhsh, Arsalan; Rashchi, Fereshteh; Sohi, M. Heydarzadeh; Nekouei, Rasoul Khayyam

doi:10.4028/www.scientific.net/amr.829.347

Cited by 14 publications

(13 citation statements)

References 13 publications

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“…Beedri et al., [89] Miles et al [90] . and Ravanbakhsh et al [75,76] . observed the formation of nanorods in electrolytes such as sodium fluoride, hydrogen carbonate and ammonium chloride (Figure 8f–g).…”

Section: Influence Of Electrolytementioning

confidence: 94%

“…Further, structures found like nanoneedles [68] and other hierarchical structures [75] gained with adding additives such as ammonium chloride or zinc nitrate.…”

Section: Influence Of Electrolytementioning

confidence: 99%

“…Sreekantan et al., fabricated complex zinc oxide structures in 1 M to 6 M NaOH electrolytes. Crystalline zinc oxide in rod and plate like structure was otherwise observed when zinc nitrate was added to the electrolyte as zinc species [80] or ammonium chloride [75,81] . In the case of potentiostatic anodization, the growth mechanism is controlled by the formation of a nanoscale passivation layer (as is also known for aluminum anodization) on which the zinc oxide nanorods are subsequently grown by field diffusion in a “bottom‐up” process [80]…”

Section: Influence Of Electrolytementioning

confidence: 99%

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Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

et al. 2021

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Anodic zinc oxide (AZO) layers are attracting interdisciplinary research interest. Chemists, physicists and materials scientists are increasingly devoting attention to fundamental and application‐related research on these layers. Research work focuses on the application as semiconductor, corrosion protector, adhesion promoter, abrasion protector, or antibacterial surfaces. The structure and crystallinity essentially determine the properties of the AZO coatings. The type and concentration of the electrolyte, the applied current density or voltage as well as the duration time enable layer structures of structural variety. The article gives an overview of the different possibilities of anodic treatment, whereby the voltage and the current type are the main distinguishing criteria. Presented is the electrolytic oxidation (anodizing) and the electrolytic plasma oxidation (EPO). The electrolytic etching is also a process of anodic treatment. However, it does not produce AZO layers, but rather a degradation of the zinc layer. The review article shows the parameters used so far (electrolyte, current type, current density, voltage) and points out the influence on the formation of AZO structures in dependency to the used electrolyte.

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Section: Influence Of Electrolytementioning

confidence: 94%

“…Further, structures found like nanoneedles [68] and other hierarchical structures [75] gained with adding additives such as ammonium chloride or zinc nitrate.…”

Section: Influence Of Electrolytementioning

confidence: 99%

Section: Influence Of Electrolytementioning

confidence: 99%

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Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

et al. 2021

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“…In fact, it is well-known that anodization of metals improves adhesion of anticorrosion primer coatings. The formation of nanostructures by anodization has been well reported for many metals, such as Al, Ti, Hf, Zn, Ni, Nb, W, as well as Fe …”

Section: Introductionmentioning

confidence: 94%

Anodized Steel Electrodes for Supercapacitors

Sagu

Wijayantha

Bohm³

et al. 2016

ACS Appl. Mater. Interfaces

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Steel was anodized in 10 M NaOH to enhance its surface texture and internal surface area for application as an electrode in supercapacitors. A mechanism was proposed for the anodization process. Field-emission gun scanning electron microscopy (FEGSEM) studies of anodized steel revealed that it contains a highly porous sponge like structure ideal for supercapacitor electrodes. X-ray photoelectron spectroscopy (XPS) measurements showed that the surface of the anodized steel was Fe2O3, whereas X-ray diffraction (XRD) measurements indicated that the bulk remained as metallic Fe. The supercapacitor performance of the anodized steel was tested in 1 M NaOH and a capacitance of 18 mF cm(-2) was obtained. Cyclic voltammetry measurements showed that there was a large psueudocapacitive contribution which was due to oxidation of Fe to Fe(OH)2 and then further oxidation to FeOOH, and the respective reduction of these species back to metallic Fe. These redox processes were found to be remarkably reversible as the electrode showed no loss in capacitance after 10000 cycles. The results demonstrate that anodization of steel is a suitable method to produce high-surface-area electrodes for supercapacitors with excellent cycling lifetime.

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“…It was observed that the ZnO thin films can be produced from anodizing method. For example, Yamaguchi et al observed that photocatalytic of ZnO were fabricated by anodizing zinc plate using acetaldehyde solution as the electrolyte [15]. Besides, Yam et al studied the preparation of ZnO thin films by using acidified ethanolic anodizing [14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of zinc oxide thin film by anodizing

Voon

Tukiman

Lim

et al. 2014

2014 IEEE International Conference on Semiconductor Electronics (ICSE2014)

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In this work, 99% purity zinc plates were anodized at potentiostatic conditions in distilled water at 25°C. The anodizing voltages were varied from 10 V to 30 V. The morphologies of the ZnO thin film were investigated by using scanning electron microscope (SEM) and the compositions were confirmed through the characterization using X-ray diffraction (XRD). The current versus time transients during the anodizing were recorded. SEM images show that thread-like nanostructures were present on the surface of Zn plates anodized at 25 V and 30 V. XRD patterns revealed that ZnO were present on all Zn plates anodized at anodizing voltages ranged from 10 V to 30 V. Current recorded during the anodizing process increased with the anodizing voltages due to the formation of thread-like nanostructures with lower electrical resistance.

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Synthesis of Nanostructured Zinc Oxide Thin Films by Anodic Oxidation Method

Cited by 14 publications

References 13 publications

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

Anodized Steel Electrodes for Supercapacitors

Synthesis of zinc oxide thin film by anodizing

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